AC is about the only massive open world game I can think of that's done yearly & they use almost all their dev teams just to make that happen. UFG took about 7yrs I heard? Even without the publishing problems and if they could reuse most of the stuff they did for the 1st game I'd guess it'd take 2yrs at least. Don't get me wrong I loved SD but they gotta open up the map, maybe GTA & SR spoiled me but it didn't seem that open world. That's gonna take a yr even if the game was still in HK.